Method of controlling exhaust-gas recirculation in internal combustion engine

Patent · Tue Oct 23 00:00:00 EDT 1984

OSTI ID:5943961

Narasaka, S; Kishida, E; Otsuka, K

A method of controlling the recirculation of exhaust gases in an internal combustion engine provided with an exhaust-gas recirculation system by which the exhaust gases emitted from the exhaust manifold are partially recirculated into the intake manifold of the engine, comprising cutting off the recirculation of exhaust gases to the intake manifold of the engine when the engine is being warmed up, recirculating exhaust gases to the intake manifold of the engine at a rate variable in a predetermined required exhaust-gas recirculation ratio to the rate at which air is circulated to the intake manifold of the engine after the engine is warmed up, and recirculating exhaust gases to the intake manifold of the engine with a reduced exhaust-gas recirculation ratio lower than said required exhaust-gas recirculation ratio during a transient period of time intervening the conditions in which the engine is being warmed up and the conditions in which the engine has been warmed up.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha (Japan)
• Patent Number(s): US 4478199
• OSTI ID: 5943961
• Resource Relation: Patent Priority Date: Priority date 30 Sep 1982, Japan; Other Information: PAT-APPL-428645
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST GASES
RECYCLING
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
POLLUTION CONTROL EQUIPMENT
WASTES
330603* - Vehicle Design Factors- Engine System
330100 - Internal Combustion Engines